| 摘要 |
The invention relates to a hearing aid with a microphone (3), an amplifier (1, 2, 4 to 8, 10 to 12) and an earpiece (9). To improve the listening quality, the amplifier exhibits two parallel amplifier channels (1, 2) having different gain characteristics (1A, 2A). The characteristic of one amplifier channel (1) rises with frequency over the middle frequency range whereas the characteristic of the other amplifier channel (2) corresponds to an approximately constant gain in the entire frequency range. The two amplifier channels (1, 2) in each case contain a gate circuit (5, 6) which are controlled by means of a control circuit (7), which distinguishes between voiced and unvoiced speech tones, in such a manner that voiced components are processed in one amplifier channel (1) and unvoiced components are processed in the other amplifier channel (2). As a result, a higher gain than in conventional hearing aids can be selected without inconveniences arising during the listening. <IMAGE>
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